radiobutton.cs

不错的人事管理系统

using System;
using System.Collections.Specialized;
using System.Globalization;

namespace System.Web.UI.WebControls
{
	/// <summary>
	/// Summary description for RadioButton.
	/// </summary>
	public class RadioButton : CheckBox,
		System.Web.UI.IPostBackDataHandler
	{
		public RadioButton()
		{
			//
			// TODO: Add constructor logic here
			//
		}

		
		protected override void OnPreRender(EventArgs e) 
		{
			this.OnPreRender(e);
			if((this.Page != null)
				&& (!(this.Checked))
				&& (this.Enabled)
				)
			{
				this.Page.RegisterRequiresPostBack(this);
			}

			if(this.GroupName.Length == 0)
			{
				this.GroupName = this.UniqueID;
			}
		}

		protected internal virtual void RenderInputTag(System.Web.UI.HtmlTextWriter writer, string clientID) 
		{
			string local0;
			int local1;

			writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Id, clientID);
			writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Type, "radio");
			writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Name, this.UniqueGroupName);
			writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Value, this.ValueAttribute);
			if (this.Checked)
				writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Checked, "checked");
			if (this.AutoPostBack) 
			{
				writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, this.Page.GetPostBackClientEvent(this, ""));
				writer.AddAttribute("language", "javascript");
			}
			local0 = this.AccessKey;
			if (local0.Length > 0)
				writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Accesskey, local0);
			local1 = this.TabIndex;
			if (local1 != 0)
				writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Tabindex, local1.ToString(NumberFormatInfo.InvariantInfo));
			writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Input);
			writer.RenderEndTag();
		}

		bool System.Web.UI.IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) 
		{
			string local0;
			bool local1;

			local0 = postCollection[this.UniqueGroupName];
			local1 = false;
			if (local0 != null && local0 == this.ValueAttribute) 
			{
				if (this.Checked)
					goto i2;
				this.Checked = true;
				local1 = true;
			}
			else 	if (this.Checked)
				this.Checked = false;
			i2: return local1;
		}

		void System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() 
		{
			this.OnCheckedChanged(System.EventArgs.Empty);
		}

		public virtual string GroupName
		{
			get
			{
				string local0;

				local0 = (String) this.ViewState["GroupName"];
				if (local0 != null)
					return local0;
				return System.String.Empty;
			}
			set
			{
				this.ViewState["GroupName"] = value;
			}
		}

		private string UniqueGroupName
		{
			get
			{
				string local0;
				string local1;
				int local2;

				local0 = this.GroupName;
				local1 = this.UniqueID;
				local2 = local1.LastIndexOf(':');
				if (local2 >= 0)
					local0 = local1.Substring(0, local2 + 1) + local0;
				return local0;
			}
		}

		private string ValueAttribute
		{
			get
			{
				string local0;

				local0 = this.Attributes["value"];
				if (local0 == null) 
				{
					if (this.ID != null)
						local0 = this.ID;
					else
						local0 = this.UniqueID;
				}
				return local0;
			}
		}
	}
}